| Major histocompatibility complex genes are known to influence the immune functions. |
| Additionally, the grafts also contain minor histocompatibility antigens, which will elicit a rather slow immune response. |
| Parabiotic mice have been reported to produce stable blood chimerism across major histocompatibility barriers. |
| However, there are many minor histocompatibility antigens that cannot currently be matched. |
| Laboratories performing cytology, cytogenetics or histocompatibility testing will undergo on-site inspection every two years. |
| Blood and tissue typing and histocompatibility tests must be done in advance. |
